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What volume of each of the following acids will react completely with 50.31 mL of 0.146 M NaOH?
(a) 0.116 M HCl
(b) 0.164 M H2SO3 (two acidic hydrogens)
(c) 0.220 M H3PO4 (three acidic hydrogens)
(d) 0.140 M HNO3
(e) 0.271 M HC2H3O2 (one acidic hydrogen)
(f) 0.324 M H2SO4 (two acidic hydrogens)
Find delta H for HCl(g) given H-Cl bond enthalpy = +431 kJ·mol-1;
Calculate the mass of propylene glycolC3H8O2 that must be added to 0.320kg of water to reduce the vapor pressure by 2.88torr at 40C Pressure H2O 40C 55.3torr
What volume of 0.300 M CaCl2 is needed to prepare 240. mL of a solution which is 0.100 M in chloride ion.
A buffer is prepared by mixing 675 mL of 0.50 M formic acid, HCHO2, and 325 mL of 0.50 M sodium formate, NaCHO2. Calculate the pH.
Vinegar is made by adding 33 grams of acetic acid to 625 grams of water. What is the percent by mass of acetic acid in this solution vinegar?
Calculate the masses of the reactants and products of the following equation. Please show work.
A sample of oxygen gas is collected over water at 25 degrees C and a total pressure of 637 torr. The volume of the gas collected is 500.0 mL. What mass of oxygen is collected? The vapor pressure of water at 25 degress C is 23.8 torr.
Carbon oxide (carbon (II) oxide) can be purified of oxygen impurities by having it react with cobalt (II) oxide. If the impure carbon oxide contains a volume of 1.5% oxygen, and if it reacts with cobalt (II) oxide at 250 °C and 500 kPa.
Calculate the pH at the equivalence point for the titration of 0.100 M methylamine
Why are we being so careful to eliminate moisture from the reaction vessel, solvent, etc? What is the reaction that will occur if water is present?
A company is marketing a photovoltaic cell that it claims has an output of 320 W/m2 when tested at the standard 1000 W/m2 irradiation condition
A certain substance has a heat of vaporization of 29.00 kj/mol. At what Kelvin temperature will the vapor pressure be 3 times highe
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